Discharge means for drill sowing machines



A. G. EWERTH Sept. 7,19%,- 7

DISCHARGE MEANS FOR DRILL SOWING MACHINES Filed Aug. 16, 1939 INVENTOR= GEORG EWERTH ,c wfi ATTORNEYS Patented Sept 7, 1943 DISCHARGE MEANS Fonbn mQ m Anton. Georg Ewerth; ontoErik Vilhelm Vegeholm, Sweden.

Application. August :16, 1939; Serial i .InxSweden Jul monies. l

charge corn or seedin' gro'upsor singly.. The object of the'invention. istoprovide aidischarge machineslof the type-referred to a means in. sowing.

in-w "chcorn of them ostdifierent'sort and also seed of difierent sizeofgrain may be discharged.

' Primarily, the invention is characterized. by

the fact thatthedischargememberWhich is-pro; 1

Vided with" one or more: discharge holes, channels or other passages for receiving 'andi discharging the grains-singly or ingroups is extendedinto a slee'velarranged in such'relation to the discharge mem'ber as tocause the seed or corn present at the discharge: member: and "the sleeve' to succes sively pass the holes or channelsand to be dischargedlo'n rotation of the discharge'member and the sleeve. relatively to each" other. The disa charge member may consist of 'a tube element cfi'rotation, thejholes or channels in the or a solid latterrc'ase being provide'd 'in the peripheral sur face of the vmember. described. hereinafter;: .the' tubular discharge member may Ice-replaced by the: solid discharge member or? vice versa. 'The sleeve may bearrangedtorotateiand'thesdischargemember to be .t

stationary or; altemativelmthe discharge membertmay be rotary and the sleeve stationaryt If desiredmboth the discharge member and the sleevemaybe rotar-y;: H According. to 'anr important feature of the inventicn an end surface site: shoulder vof the discharge member form a circumferentialislot before it is discharged through: the holes or in dentations; The-sizdlheight) of said'slot may be adaptedto be varied 'in'such amanner as to be adjusted to fitthe particular kind of cor-n to be sown by the machine on the occasion in question,

For instance, the l ieightof the slot may bead justed so as t'o com'pel 'obl'ong g-rains-tolay them: selves with their longitudinal axis extending' in the direction ofrotation to be able 'to nass t'he slot, whereby thedischarge operation will be e'f ficient and reliable. To obtain said adjustabili'ty thesleeve and th'edi'schargei member-'may bead:

justable axially relatively to each-other-. The

purpose of I such adjustabilitymay also b I to uncover the I discharge holes cr channels from the end portion of the sleeve toa greater or less" extent so as tdsuittheyfree passageofthe discharge In. the embodiment to be of the sleeve and an oppoi which the corn hasto pass sa a-1a: sw i msg gn alter Hallwyt Von Geijer, Y

plained in the. following description of some em= .bodiments thereof which are illustrated by way' of exampl'e in the accompanying drawing in which 7 n 1" i'sfan' elevation of as'eed= ho'pper'hav-. ing" anumber of discharge units mountedrthere l 'ig. 2 is'a cross-sectional View of theseedfhop' merits Qt'ad'i'sChargemeans in section, i

Figs; 3 and 4" are vertical elevationsbf the sleeve "and a portion of the discharges member illustrating -tlie'" sleeve in a. position for. sowing singly'a'nd'in a convert'ed positionfor sowingin per nian enlarged scale illustrating "some ele- -mddified discharge channel, Fig;9:-is*an' axial section of. a further modification of the discharge tube andthsleeve,

Fig."10 is a vertical elevationfof. a detail, and Figgn' isfa'sectional view on line XL-XI in FiEHiO. 1 i The discharge means comprises a discharge member l 'and a sleeve '2 mounted in' a seeclhopper 3i Any suitable number ofjdischarge units cdiisi'sting'of 'a :sleeve and atube or solid di charg'e'member may be mounted in one and the same sed hopper spaced from each other corresponding to .the distance between the furrows in Whicli -the'corh is tobe' sown. Fig.- 1 illustrates Irirthe: embodiment disclosed in- Figs. 1 and 2, the sleeve-2- haseone endthereof fitted into a bottomgaperturein the'seed hopper and is secured to thehottom of said hopperby a flange 4; In this case. the r discharge tube is rotary. To this end the tube has, an. extension. 5 projecting upwardly: through the seed'hopper and carrying at the top thereof a bevelled gear 6 which is displaceable on the extension! and on rotation can rotate thisezrtension and the tube by way of a Sp Thegear 5 is supported by a bearing I 81, h i s c'arried'by-a bracket 9 secured to the s"eed,'h pper.3 (or to the machine frame); and which may also be formed as a bearing for the ezit'ension 'ir Fixed on a shaft I0 journalledin holes-to thesize ofthe grain to-b'e sown;

the ra ej ofthe machine and extending inthe iengituamar direction of the seedhopper 3- are lf'urtherfeaturesofthe invention will beexe vided in the wall of Axial, grooves 34 may size of which is adjusted with regard to the size of oblong grains it is adjusted so-as to compel lying position to be able toof grain of the seed to be discharged. In casethe grains to take a pass the slot. In consequence,the slot should be a narrower than the length ofthegrain. The size of the slot may be made variable by arranging the of being dis- Such discharge tube I so as to be capable placed axially in relation to the sleeve 2. adjustability may means.

comprising a sleeve [8 journalled on a reduced- 5' andcarrying a toothed portion of the extension rack l9 which cooperates witha gearZll which is splined to'an adjusting shaft 21 extending in the longitudinal direction-of the hopper. The

sleeve I8 is mounted between a shoulder Hand a stop ringJZ B'On-the extension 5 but does not; prevent rotation of the extension for effecting the" rotation of the discharge tube.

As suggested in Fig. 1, the adjusting shaft is carried by bearings 24 at the ends of the hopper 3, and atone end the shaft has a crank 25'having a pointer-26 which,

be effected by any suitable" Fig. 2 illustrates an adjusting. means.

,--and the relative motion the sleeve 2. The grains lay themselves in a periphery of the grains to take a lying position at and in the slot 16 on rotation of the tube.

The operation of the discharge means is illustrated particularly by Fig. 3. The grains present around the discharge tube and its extension in the seed hopper will be fed successively into the slotlat the rotation of the feed tube, the oblong grains being compelled as to have their longitudinal direction in the direction of rotation due to the height of the slot between row 35 on the oblique end surface l5 around the tube, as illustrated in Fig. 3. As the hole 3llpasses the grains in said row these grains slide down along the oblique end surface l5 and'through the hole into the tube through which they fall down on the ground. A tapering collection. funnel 36 (Fig. 1) may be arranged below each tube to concentrate the seed to one point in alignment with the centre of the tube. 1

- In' case of sowing the grains (singly the 'dis.-.

I charge tube is adjustedso asto uncover thegdis-v chargeholes only to an. extentsuflicientto allow one grain topass the hole' ata time. In sowing I groups of corn it maybe suitable to provide one or more. indentations or grooves or slots in the, end surface :of the-sleeve to enable the entire L discharge holeigor a great'portion thereof'to be on operation. of the crank; moves along an index I scale 21 mounted on the" end of'the hopper (Figs. 1 and 2) The shaft 2iccarries'a the crank all the discharge tubesiwill be moved upwardly or downwardlyby means of the gears 20 and the'racks I9. The graduation of the scale 21 may be such as to enable direct reading of the size of the slot l6. As a. result;it is possibleto adjust the discharge tube by, means of the crank so as tosetthe'shoulder 14 at the desired distance from .the end surface I5 of the sleeve according to'the kind of corn to be sewn on the occasion in view.

Theend surface l5 of the sleeve '2 extends obliquelyfinwardly towards the discharge tube, as more particularly illustrated in Fig. 2. Closely below' the shoulder. M of the discharge tube I there are one or more discharge holes pro-,- the discharge tube I. These holes extend obliquely and downwardly to a point somewhat below'theoblique end surface l5 of the sleeve 2. At the top the" hole is'limitedby an edge 32 extending downwardly and rearwardly (as-looked {in relation to the directionof rotation indicated by the arrow 3|). On axial-adjustment of. the discharge tube l the dischargehole is uncovered to a greater or less extent above the .obliqueend surface 15 'ofthe' sleeve. For example, "case of discharging particularly small grains the dischargetube is adjustedsoas to uncover the" upper triangular corneriof {the discharge hole only, and in case of larger grains a great portion ,of the hole is positionedabove the end surface {5. of the sleeve. V The oblique endsurface l5.mayhave transverse or radial grooves 33', whereas'the shoulder l4 situated abovesuitably is plane and even. i further beprovided at the extension of 'the discharge tube I around the peripheryqclosely "above 7 grooves. 33 and 34 as well as the inclination of the end surfaceelfi assist in caus ng the oblong gear 20 foreach" discharge unit and, therefore,on operation-of sleeve 2 which isremovable-so i hole passes the slot and,

grains will be discharged. simultaneously; [This I uncovered temporarily. vSuch slots may advantageously be provided-in.the,bottom.edge of the that it may be converted andiinserted intothe. bottomaperture of the seed hopper, the end-.portion'with the slot extending to some extent' ab'ove the .bottom of the seed hopper; This position of the sleeve is illustrated inFig. 4=inwhich the end slot orindentation is designated .by 38. The side'edgesj39 of the slot do not.extend radially-but run posite to the direction ,of.rotation,' tom edge 40 of the" slot is inclined inwardly like the end surface of the sleeve. The discharge hole-30 and the slot 38 have 'theirlength, counted in the direction of rotation,'such"-.that a plurality of grains are ableto pass the uncovered portion of the discharge hole simultaneously when this as a result, a plurality of.

arrangement is particularly suited to sowing beet seed.

' For the purpose of 'mountingthe sleeve. ina' converted position to-the'bottom-of the'seedhopper the sleeve-may a flange 4 like the flange. 4 at the opposite end In the embodiment now described discharge tube has-been assumedto' berotary and the sleeve 2' to .be stationary. Fig. '7;illustrates a modification in which the'sleeve .is rotary'and the discharge tube l stationary. For driving purpose the sleeve may be provided which meshes witha worm Hg mounted one shaft 10 vwhichextends below the seed hopper and is moved from the travelling wheels of the the shoulder lLCThe sowing machine by Way; of a'driving wheel l2 secured to the shaft as inthe foregoing embodiment; The shaft IEV-carries one worm for each worm gear. 1 I 1 Furthermore, it is possiblezto provide the sleeve 2 for axial adjustment instead of the discharge tube I in such case, the sleeve may compriseor be provided with adjusting means similar ,to the elements l8 to 21-shown in Fig. 2.

As an alternative to-.the..,discharge holes passed comrletelyv thro h,theirs.Pi-ieed gharge I to" take such a position the tube l and obliquely op- Y and the bot:-

be provided witlrfor example with a worm; gear 6,-

tube, it ispossible; to furnishtheoute'r peripheralsurfaceof tlietube witli e V nelsongrooves vvhicha extends own'wardlyi in one or morepassagesf betvieen the tube 'and the sleeve; This issues-tin in Fig; 8 in which the cha-nn" lnstead ofexten ding I the top and downward into :th

sible-to disposethefsleeve'at th top-in tlie see charge; holes 301 are'provided the tub inthe-foregoingembodimenti r r The shape of the-. discliai-igq=jhdlegshovjn 3andfl'inwhich-thehole oblidu, u we edgecauses" a relatively consi placement of the discharg from sowing large grains f to adjusting movement m-a'y be; shape ofthe 'hole or chai'inel'fw I in Figs. 10 and 11. Y v the top edge 32' of the hole 30 forms stepsf-vvhi h'result-in a small passage:operiingflfiihteride for larly" small grain when the disc been displaced downward} to theedge 32' hascome'oii top edge of thesleevei;

' Further-modification be nintl'i' drawingmay occur invention; I

whatlclaimim; 1. In-a seed-for corn'dschar sewing machines; afdischar substantially vertical longitudin surrounding said discha-rge me' rotate. saidrsleeve and said member relatively to each other, a passage insaiddischarge member for successively receiving and discharging the seed or corn, a narrow oblique surface portion on said sleeve and an opposite shoulder on said discharge member to form a circumferential guide space for receipt of the seed or corn and to definitely arrange the individual grains in a row on said narrow oblique surface before they essteamed m mber a axi cape through said passage, whereby to obtain a uniform discharge of the seed or com.

2. A seed or corn discharge means corn-prising in combination with a hopper, a sleeve dlS posed with its longitudinal axis substantiallyvertical in said hopper, a. discharge member extending axially into said sleevenieans to rotate said sleeve and said discharge member relatively to laser; nieans to" more is illustrated v :sor

at l the sleeve and the 1y vertical axis a discharge tube extendingl in'to" said sleeve, meansto rotate the tubeand sleeve relatively to ea'ch Foitheigan oblique circumfer en'tial surface portion on said sleeve; 'awshoulder on said discharge tube disposed opposite to :said circumferential surface portion onsaid-sleeves a discharge 1101s extending through the wall of said tubebbliquely downwards for successively: receiving and" discharging seed or corn present discharge member:- on the relative rotationthereofl" 5'; A seed or corn discharge means comprising in combination a sleeve having a substantially vertical ax is'; a -disch arge 'tubieextending axially into said sleeve, means 'to rotate saidsleevj and said dischargetuberelatively to each'other, an oblique circumferential surface portion on said sleeve, a shoulder on saiddischarge tub disposed opposite tosaid circumferential surfac portion? on said sleeve, and a'discharge hole-or holes in the wall of saidtube, the top edge ofeach hole extending 'obliquely downwardsand backwards 9 iei i t are in relation to the direction or sleeve.

6. A seed or eorn isch rge- 111mm comprisingi in combination with a hopper'having arr-"aperture in the bottom thereof,"a'sleeve mounted removably in said hopper with one end I thereof fitting insaid apertures-meme other end anama-tea to :fit thereinto anrremo ar and conversion of i th'e'sleeve,a discharge-tubeextending-axially into said sleeve means- 1:6 rotate said sleeve and said charge liole or hole's in-the wall of said tiibe and one end ofoneor more grooves or recesses insaid sleeve corresponding tothe hole raises irrthe deem-restatetorq o eu esteased sdor' cornisuccessively discharge-means .for drill 7. A seedlor corn sowing machines comprising in combination with each other, a passage in said discharge member for successive receipt and discharge of the seed or corn, an oblique end surface on said sleeve,

said surface sloping towards the dis-charge memvertical axis, a dischargemember extending axially into said sleeve, means to rotate said sleeve and said discharge member relatively to each other, an oblique circumferential surface on said sleeve, a shoulder on said discharge member disportion, and an adjustingmeans a hopper, a number of discharge members with a substantially vertical axis, a number of sleeves each receiving one discharge member, means to rotate said discharge members relatively to said sleeves, a'passage portion in each discharge memher for ,successivelyreceiving and discharging the seed or corn, an oblique surface portion on each sleeve and a'corresponding shoulder on each discharge member forming a circumferential guide space for receiving the seed Or corn'preparatory to escape thereof through said passage common to all discharge members to displace all of saidmembersaxially at a time in relation to the sleeves to adjust the vertical breadth of said guide spaces.

8. A seedor corn discharge mean for drill sowing machines comprising in combination with a hopper, a number of discharge members with a substantially vertical axis, a number of sleeves each receiving one discharge member, means to rotate said discharge members relatively to said sleeves, apassage portion in each discharge member for successively receiving and discharging the seed or corn, an oblique surface on each sleeve and a corresponding shoulder on each discharge member forming a circumferential guide space for receiving the seed or corn preparatory to escape thereofthrough said passage portion, and

' in combination a sleeve an adjusting means'commonito all tslGQYOsstQdiS: place all such. sleeves V axially at a: tim i n rela,-' tion to theldischargei membersato adjust; said guidespaces.

9; A seed or corn discharge means 1' comprising having a substantially vertical axis, a discharge tube extending axially into said sleeve; means to o-rotatejsaid sleeve and saiddischarge tube relativelykto each .other ga discharge hole or holes in thegwallof said ;tube; the top edge of each hole being formed with steps ascending obliquely in the; direction of ,;the; axis of. the dischargetube to form-a small passagefor seed 0r corn having small grains, an oblique sur face portion on said sleeve, an cl ;a shoulder onsaid discharge tubeforming; a circumferential guide space for receivingthe seed or corn'preparatory to the escape thereof through said passage: r

in combination a sleeve disposed in upright po-j tending axially into said ,Sleevemeans to rotat said sleeve and said dischargemember relatively. to each other, a-passage in said discharge memberforsuccessively receiving and discharging the seed or corn, and an end surface portion on said sleeve having substantially radial grooves therein and a shoulder on said discharge member forming a circumferential slot with said endsun, face portion for receiving the seed or corn before the discharge thereof through saidpassage;

ll. A seed or corn discharge means eomprising in combinations sleeve disposed-in upright position on a vertical axis, adischarge member ex tending axially into said sleeve, means to rotate said sleeveand said discharge member relatively ber for successively receiving and discharging the a seed or corn, and an end surface-portion yon said sleeve and a shoulder on. said discharge -mem-. berforming a circumferential slotvvith-said end surface portion for receiving the; seedaor corn before the discharge thereof through said passage, and said shoulder being provided with substantially transverse grooves therein.

10. A seed or corn'discharge-meanscomprising -.12.-A; seed oncorn'discharge means compris-i ingwin combination a sleeve disposed inupright position on a;-vertical axis, a discharge member extending axially into said sleeve, means to ro-, tate said sleeve andsaid discharge member relativelyfto each other, a passage insaid discharge member for successively receiving and discharging the seed'or corn, and an nd-surfac portion on said sleeve having substantially radial grooves therein and a shoulder on said discharge mem-, ber forming-a circumferential slot with said end surface portion for receiving the seed or comfbe fore the discharge and said shoulder forming a plane SmOQth-SPIj face.

- 13. A seed or corn discharg means comprising, in combination a sleeve disposed in; upright po-, sition on a vertical axis, a discharge member extending axially into said sleeve, means to rotate said sleevev and said dischargemember relatively to each other, a passage in said discharge mem-Q, ber for successively receiving and discharging-the seed or corn, and an end surface portion-on said sleeve and ashoulder on said -di'scharge member; to form a circumferential slotfor receivingthe seed or corn before the discharge thereof through said passage,said shoulder having a substantially V flat surfac portion and said passage having a to each h r ss in a d d schar e mem-1- seed or corn having small grains.

, ber forsuccessively receivin limited size andoblique hape in said discharge member for limiting the same to accommodating 14. A seed or corn discharge in combination; a sition on a vertical axis, a discharge member ex: tending axially into saidsleeve, means to rotate said sleeve and said dischargememberi'relatively to each other, a passage in said-dischargemeni o g and dischargingrthe, seed or corn, an oblique surface portion'on saidsleeve having transverse grooves therein landa substantially smooth plane shoulder on isaiddischarge member forming a circumferential space.

means comprising for receiving the seed or, corn/preparatory to the discharge thereof through said passage.

.i VANTOIN GEoiaG EWERTH.

re f r ue 'id page;

sleeve disposed: in upright poo 

